Re: [PATCH v8 1/1] vfio/nvgpu: Add vfio pci variant module for grace hopper

[Christoph Hellwig]

On Thu, Sep 07, 2023 at 10:04:10PM -0600, Alex Williamson wrote:
> > I think it really depends on what the qemu side wants to do..
> 
> Ok, I thought you had been one of the proponents of the fake BAR
> approach as more resembling CXL.  Do we need to reevaluate that the
> tinkering with the VM machine topology and firmware tables would better
> align to a device specific region that QEMU inserts into the VM address
> space so that bare metal and virtual machine versions of this device
> look more similar?  Thanks,

Yes, providing something to a VM that doesn't look anything like the
underlying hardware feels pretty strange.